CN108320858A - A kind of high-temperature superconductor flows cable and realizes the method flowed - Google Patents
A kind of high-temperature superconductor flows cable and realizes the method flowed Download PDFInfo
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- CN108320858A CN108320858A CN201810186307.3A CN201810186307A CN108320858A CN 108320858 A CN108320858 A CN 108320858A CN 201810186307 A CN201810186307 A CN 201810186307A CN 108320858 A CN108320858 A CN 108320858A
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- layer
- superconductive tape
- cable
- inductance
- temperature superconductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
- H01B12/06—Films or wires on bases or cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Abstract
Cable is flowed the invention discloses a kind of high-temperature superconductor for belonging to superconducting magnet technical field and realizes the method flowed.The cable is that hts band is wound on cylindrical metal skeleton, its cylindrical framework uses integrally formed flexible metal tubulose structure, or cylindrical framework is become after bundle, twisting using multicore metal wire, and skeleton periphery in a spiral manner it is close around thin copper belt as transition zone, it is concave-convex to smooth part；Multilayer superconductive tape is wrapped in using spiral way on metallic framework, multilayer superconduction tape load point is originated with being welded on one on copper electrode；The destination node of multilayer superconductive tape forms multilayer and superconducts fluid layer with being welded on a termination copper electrode；Metallic framework is other than playing internal supporting role, moreover it is possible to shunting function is played when superconducting layer breaks down；Multilayer is superconducted fluid layer and is designed using balance inductance, is realized the mean allocation of electric current between different superconductive tapes, is made full use of the current carrying capacities of each superconductive tape.
Description
Technical field
The invention belongs to superconducting magnet technical field, more particularly to a kind of high-temperature superconductor flows cable and realizes the side flowed
Method.
Background technology
High-temperature superconducting magnet cable is the basic unit of coiling large size magnet.Have very using single superconductivity wire coiling magnet
More problems, most important problem are that the number of turns is more, and inductance is big, and safety is low, so multiple conducting wires are formed cable by combining form
Line, using cable coiling high-temperature superconducting magnet, magnet the number of turns can substantially reduce, and inductance also will be greatly reduced therewith.This cable
Cable architecture is used widely in large-scale low-temperature superconducting magnet field.
With the fast development of high temperature superconducting materia, various high-temperature superconductor cable forms also continue to bring out.Such as band letter
Single in parallel, terminal welding is formed a kind of simplest cable form, in addition to this also has and is directed to the flat knot of high-temperature superconductor
The Roebel cable of structure belt structure design have also been applied.
However, it is exactly equal flow problem which kind of cable, which faces a key technical problem, although cable be more bands simultaneously
Connection, but electric current is not distributed evenly on every band, causes the certain band electric currents of cable excessive, certain bands are without electricity
Stream, does not play the due diverter function of cable.What this even phenomenon of current unevenness occurred in superconduction cable is particularly acute.This
It is because under the conditions of more superconductivity wire parallel connections, superconductor does not have resistance, according to Ohm's law model, the electricity in each wire
Size of the stream depending on every band terminal contact resistance, and contact resistance influence factor is relatively more, is difficult accurate in technique
Contact resistance is controlled, causes shunting uneven.
Therefore it flows the design of cable the present invention provides a kind of high-temperature superconductor and realizes the method flowed.This kind of cable master
It is the occasion for exchanging or needing transient field to want application scenario, and under AC applications occasion, cable main impedance is carried by induction reactance
For, therefore the cable realizes stream of the electric current between different layers superconducting line in the way of balance inductance.
Invention content
Cable is flowed the object of the present invention is to provide a kind of high-temperature superconductor and realizes the method flowed；It is characterized in that,
It is that hts band is wound on cylindrical metal skeleton that the high-temperature superconductor, which flows cable, and cylindrical framework uses one
Body formed flexible metal tubulose structure, or passed through as cylindrical framework after bundle, twisting using multicore metal wire, and
Skeleton periphery in a spiral manner it is close around thin copper belt as transition zone, it is concave-convex to smooth part；Multilayer superconductive tape is used into spiral
Mode is wrapped on metallic framework, and multilayer superconduction tape load point is originated with being welded on one on copper electrode；Multilayer superconductive tape
Destination node be welded on one termination copper electrode on；
The metallic framework is other than playing internal supporting role, moreover it is possible to play shunting when superconducting layer breaks down and make
With；
A kind of high-temperature superconductor flows cable and realizes the method flowed, which is characterized in that concrete methods of realizing is as follows：
First layer superconductive tape is wound to using clock wise spirals mode on skeleton, and winding pitch is adjustable；Second layer superconductive tape
It is wound on first layer superconduction using counter-clockwise helical mode, winding pitch is adjustable, and third layer superconductive tape uses spiral shell clockwise
Rotation mode is wound on second layer superconductive tape, and so on spiral carried out with opposite each other direction between layers twine
Around；If every layer of superconductive tape is considered as a small coil being wrapped on skeleton, coil terminal be connected, then two terminals it
Between voltage solved by following formula：
Wherein V is electrode both end voltage, and Φ i are the magnetic fluxs of the i-th layer line circle, and Li is the self-induction of the i-th layer line circle, and Min is i-th
Mutual inductance between layer and n-th layer coil；Therefore using the mutual inductance value between inductance value and coil of simulation optimization design coil；It is logical
Adjustment inductance balance is crossed, and then realizes that electric current flows.
The adjustment inductance balance, using in unit build-out, from-inner-to-outer, the screw pitch of each layer superconductive tape is using dynamic
State adjustment mode is gradually reduced or the width of each layer superconductive tape is gradually reduced to adjust inductance balance, realizes that electric current is super in different layers
Stream between conducting wire.
The screw pitch of each layer superconductive tape is gradually reduced using dynamic adjustment mode to adjust inductance balance, in every superconduction
At end of tape surface but also place is not overlapped with copper billet paste a hall probe 12；Hall probe is a kind of field sensing component,
The corresponding electric current of every band can be accurately obtained by measuring strip surface magnetic field, it is constantly dynamic by testing size of current
State adjusts the screw pitch of ectonexine superconductive tape, obtains best balance inductance, realizes stream between layers.
It is described that the width of each layer superconductive tape is gradually reduced using dynamic adjustment mode come to adjust inductance balance surpassed at every
Do not utilize at conduction band end surface but with copper billet overlap joint place Rogowski coil current probe 13 also, Rogowski coil is that one kind is directly surveyed
The element for measuring electric current obtains best balance electricity by testing size of current, constantly strip width between dynamic adjustment ectonexine
Stream between layers is realized in sense.
The beneficial effects of the invention are as follows the cables to realize electric current between different layers superconducting line in the way of balance inductance
Stream.
Description of the drawings
Fig. 1 is superconduction cable overall structure diagram of the present invention.
1 cable arrangement schematic diagram of Fig. 2 embodiments.
Fig. 3 terminal Hall piece scheme of installation.
2 cable arrangement schematic diagram of Fig. 4 embodiments.
Fig. 5 terminal Rogowski coil scheme of installation.
Main element symbol description, 1- copper wire, 2- boundling skeletons, 3- thin copper belts, 4- first layer superconductive tapes, 5- first layers are super
Conduction band coiling screw pitch, 6- second layer superconductive tapes, 7- second layer superconductive tape coiling screw pitch, 8- third layer superconductive tapes, 9- third layer are super
Conduction band coiling screw pitch, the 4th layer of superconductive tape of 10-, the 4th layer of superconductive tape coiling screw pitch of 11-, 12- hall probes, 13 Rogowski coils.
Specific implementation mode
Cable is flowed the present invention provides a kind of high-temperature superconductor and realizes the method flowed；Simultaneously below according to Figure of description
In conjunction with specific embodiments to further statement in detail of the invention.
Embodiment 1
Superconduction cable arrangement schematic diagram as shown in Figure 1, wherein innermost layer constitute boundling skeleton 2 with boundling multicore copper wire 1,
Its multicore copper wire 1 is the copper enameled wire using more 0.85mm diameters, the overall diameter 15mm of boundling skeleton 2, in skeleton periphery
It is concave-convex to smooth part as transition zone to be helically wound thin copper belt 3；It is super that first layer is wound except thin copper belt transition zone
Conduction band 4, superconductive tape 4 are the YBCO bands of 0.15mm thickness 4mm wide；
As shown in Fig. 2, first layer superconductive tape 4 is according to the right-hand rule, wind in clockwise manner, first layer superconductive tape
Screw pitch 5 is 14mm, and initial layers use and have no strict regulations clockwise or counterclockwise；Second layer superconductive tape 6 is in a counterclockwise manner
Winding, second layer screw pitch 7 are 12mm；Third layer superconductive tape 8 is wound in clockwise manner, and third layer screw pitch 9 is 10mm；4th layer
Superconductive tape 10 is wound in a counterclockwise manner, and the 4th layer of screw pitch 11 is 8mm；Then from-inner-to-outer, each layer screw pitch are adjusted using dynamic
Mode is gradually reduced, and the determination of screw pitch herein is to change winding angle to adjust, and screw pitch is possible to can be different, need to pass through emulation
Or calculate and learn, but final purpose is provided to balance the inductance between each layer；Can with the inductance between each layer of active balance,
Realize that the electric current in the case where exchanging through-flow mode flows.
In actual use, the selection of actual pitch uses dynamic adjustment mode, as shown in figure 3, in every superconduction
At end of tape surface but also place is not overlapped with copper billet paste a hall probe 12.Hall probe is a kind of field sensing component,
The corresponding electric current of every band can be accurately obtained by measuring strip surface magnetic field, it is constantly dynamic by testing size of current
State adjusts the screw pitch between ectonexine, obtains best balance inductance, realizes stream between layers.
Embodiment 2
In embodiment 1, the inductance between different layers is balanced in such a way that the band of commensurateiy wide is by change screw pitch
Realize that electric current flows；In example 2, inductance balance is realized using the band of different in width, as shown in figure 4, first layer superconduction
It is wound using the YBCO band clock-wise fashions of 0.15mm thickness 12mm wide with 4, initial layers are used and had no clockwise or counterclockwise
Strict regulations, coiling screw pitch use close-packed arrays mode；Second layer superconductive tape 6 is inverse using the YBCO bands of 0.15mm thickness 10mm wide
Hour hands mode is wound, and coiling screw pitch is arranged using compact fashion；Third layer superconductive tape 8 uses the YBCO bands of 0.15mm thickness 8mm wide
Material clock-wise fashion coiling, coiling screw pitch are arranged using compact fashion；4th layer of superconductive tape 8 uses the YBCO of 0.15mm 6mm wide
Band counter-clockwise coiling, coiling screw pitch are arranged using compact fashion, and closely its screw pitch is 0 when arrangement.
In actual use, the collocation of practical superconductive tape screw pitch uses dynamic adjustment mode, as shown in figure 5, every
It is a kind of not utilize at root superconductive tape end surface but with copper electrode overlap joint place Rogowski coil current probe 13, Rogowski coil also
Directly measure the element of electric current.By testing size of current, constantly strip width between dynamic adjustment ectonexine, obtain best
Balance inductance realizes stream between layers.
Two kinds of four layers of superconduction cable arrangements listed above, by changing superconductive tape winding screw pitch or by changing superconductive tape
Strip width realizes inductance balance, and then electric current flows between the different superconduction belts of realization.Its essential characteristic from-inner-to-outer, in phase
On same build-out direction, the number of turns of internal layer guide layer coiling is less, and the number of turns of outer layer coiling is more.The actual current number of plies
It can be adjusted flexibly as needed.
Simultaneously based on above-mentioned basic thinking, all kinds of redundant organisms can also be proposed, using first by two layers of superconductive tape parallel connection
Afterwards according still further to method coiling in embodiment 1, first layer superconductive tape uses the band coiling of 12mm wide, second layer superconductive tape to use two
After root 6mm bands are first in parallel inductance matching is realized by adjusting screw pitch further around the method for system, second layer superconduction belt；This is quite
It is used in combination with the method in embodiment 2 in the method in embodiment 1；The cable arrangement generated based on this thinking is equal
The scope of this patent should be included in.
Cable as practical application also has insulating layer except superconducting layer, if also needed under particular service requirement
Armor is installed additional in cable periphery, these conventional designs repeat no more.
Claims (6)
1. a kind of high-temperature superconductor flows cable；It is characterized in that, it is by hts band coiling that the high-temperature superconductor, which flows cable,
On cylindrical metal skeleton, cylindrical framework uses integrally formed flexible metal tubulose structure, or using multicore gold
Belong to line by bundle, become cylindrical framework after twisting, and skeleton periphery in a spiral manner it is close around thin copper belt as transition
Layer, it is concave-convex to smooth part；Multilayer superconductive tape is wrapped in using spiral way on metallic framework, the starting of multilayer superconductive tape
Point is originated with being welded on one on copper electrode；The destination node of multilayer superconductive tape is same to be welded on a termination copper electrode.
2. a kind of high-temperature superconductor flows cable according to claim 1；It is characterized in that, the metallic framework is interior in addition to playing
Outside portion's supporting role, moreover it is possible to play shunting function when superconducting layer breaks down.
3. high-temperature superconductor described in a kind of claim 1, which flows cable, realizes the method flowed, which is characterized in that specific implementation is flowed
Method is as follows：
First layer superconductive tape is wound to using clock wise spirals mode on skeleton, and winding pitch is adjustable；Second layer superconductive tape uses
Counter-clockwise helical mode is wound on first layer superconduction, and winding pitch is adjustable, and third layer superconductive tape uses clock wise spirals side
Formula is wound on second layer superconductive tape, and so on spiral winding is carried out with opposite each other direction between layers；Such as
Every layer of superconductive tape of fruit is considered as a small coil being wrapped on skeleton, then, coil terminal is connected, voltage between two terminals by
Following formula solves：
Wherein V is electrode both end voltage, and Φ i are the magnetic fluxs of the i-th layer line circle, and Li is the self-induction of the i-th layer line circle, Min be i-th layer with
Mutual inductance between n-th layer coil；Therefore using the mutual inductance value between inductance value and coil of simulation optimization design coil；Pass through tune
Whole inductance balance, and then realize that electric current flows.
4. a kind of high-temperature superconductor flows the method that the realization of cable is flowed according to claim 3, which is characterized in that the tune
Whole inductance balance, using in unit build-out, the screw pitch of from-inner-to-outer, each layer superconductive tape is gradual using dynamic adjustment mode
Reduce or the width of each layer superconductive tape be gradually reduced to adjust inductance balance, realizes that electric current is equal between different layers superconducting line
Stream.
5. a kind of high-temperature superconductor flows the method that cable realization is flowed according to claim 3, which is characterized in that each layer
The screw pitch of superconductive tape is gradually reduced to adjust inductance balance using dynamic adjustment mode, at every superconductive tape end surface but also
Place is not overlapped with copper billet paste a hall probe (12)；Hall probe is a kind of field sensing component, by measuring band table
Face magnetic field can accurately obtain the corresponding electric current of every band, and by testing size of current, constantly dynamic adjustment ectonexine is super
The screw pitch of conduction band obtains best balance inductance, realizes stream between layers.
6. a kind of high-temperature superconductor flows the implementation method of cable according to claim 3, which is characterized in that described using dynamic
Adjustment mode is gradually reduced the width of each layer superconductive tape to adjust inductance balance be not at every superconductive tape end surface but also not
It is a kind of direct element for measuring electric current to utilize Rogowski coil current probe (13), Rogowski coil with copper billet overlap joint place, is passed through
Size of current, constantly strip width between dynamic adjustment ectonexine are tested, best balance inductance is obtained and realizes between layers
Stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186307.3A CN108320858B (en) | 2018-03-07 | 2018-03-07 | High-temperature superconducting current-sharing cable and method for realizing current sharing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186307.3A CN108320858B (en) | 2018-03-07 | 2018-03-07 | High-temperature superconducting current-sharing cable and method for realizing current sharing |
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| CN108320858A true CN108320858A (en) | 2018-07-24 |
| CN108320858B CN108320858B (en) | 2020-05-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899157A (en) * | 2018-08-17 | 2018-11-27 | 广东电网有限责任公司 | A kind of current limiter superconducting coil of helical structure |
| CN109856571A (en) * | 2019-01-23 | 2019-06-07 | 深圳供电局有限公司 | A kind of test device of the through-flow conductor electromagnetic property of hyperconductive cable |
| CN110211765A (en) * | 2019-06-12 | 2019-09-06 | 华北电力大学 | A kind of superconducting current-limiting transformer |
| CN111613384A (en) * | 2020-05-21 | 2020-09-01 | 中国科学院合肥物质科学研究院 | CICC conductor of ReBCO high-temperature superconducting tape and manufacturing method thereof |
| CN113470887A (en) * | 2021-08-03 | 2021-10-01 | 广东电网有限责任公司 | Superconducting cable structure |
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| CN103578741A (en) * | 2013-10-31 | 2014-02-12 | 华北电力大学 | Transposition method of two parallel superconducting tapes during winding of solenoid coil |
| CN105489314A (en) * | 2015-11-23 | 2016-04-13 | 上海交通大学 | High-temperature superconducting twisted wire winding method |
| CN106253199A (en) * | 2016-08-08 | 2016-12-21 | 华北电力大学 | A kind of cold insulation high-temperature superconductive cable screen layer end construction and method of attachment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109856571A (en) * | 2019-01-23 | 2019-06-07 | 深圳供电局有限公司 | A kind of test device of the through-flow conductor electromagnetic property of hyperconductive cable |
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| CN110211765A (en) * | 2019-06-12 | 2019-09-06 | 华北电力大学 | A kind of superconducting current-limiting transformer |
| CN111613384A (en) * | 2020-05-21 | 2020-09-01 | 中国科学院合肥物质科学研究院 | CICC conductor of ReBCO high-temperature superconducting tape and manufacturing method thereof |
| CN113470887A (en) * | 2021-08-03 | 2021-10-01 | 广东电网有限责任公司 | Superconducting cable structure |
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